Brother HL-4140CN Service Manual page 30

ERROR INDICATION AND TROUBLESHOOTING
This chapter details error messages and codes which the incorporated self-diagnostic function of the
printer will display if any error or malfunction occurs. If any error message appears, refer to this chapter
to find which parts should be checked or replaced.
The latter half of this chapter provides sample problems which could occur in the main sections of the
printer and related troubleshooting procedures.
1. INTRODUCTION ........................................................................................2-1
1.1 Precautions................................................................................................................. 2-1
1.2 Initial Check ................................................................................................................ 2-2
2. OVERVIEW.................................................................................................2-4
2.1 Cross-section Drawing ............................................................................................... 2-4
2.2 Paper Feeding ............................................................................................................ 2-5
2.3 Operation of Each Part ............................................................................................... 2-6
2.4 Block Diagram ............................................................................................................ 2-8
2.5 Components ............................................................................................................... 2-9
3. ERROR INDICATIONS.............................................................................2-10
3.1 Error Codes .............................................................................................................. 2-10
3.2 Error Messages ........................................................................................................ 2-16
3.3 Error Cause and Remedy ......................................................................................... 2-21
3.4 Paper Feeding Problems .......................................................................................... 2-86
3.4.1 No feeding ....................................................................................................... 2-86
3.4.2 Double feeding ................................................................................................ 2-89
3.4.3 Paper jam ........................................................................................................ 2-89
3.4.4 Dirt on paper .................................................................................................... 2-93
3.4.5 Wrinkles on paper............................................................................................ 2-93
3.5 Image Defect Troubleshooting.................................................................................. 2-94
3.5.1 Image defect examples ................................................................................... 2-94
3.5.2 Pitch indicated in roller image.......................................................................... 2-95
3.5.3 Troubleshooting image defect ......................................................................... 2-95
3.6 Software Setting Problems ......................................................................................2-111
3.6.1 Cannot print data ............................................................................................2-111
3.7 Network Problems ...................................................................................................2-111
3.7.1 Cannot make a print through network connection (Error code ED, EE) .........2-111
CHAPTER 2
CONTENTS
Confidential